Hi guys, I'm trying to install Catalina with Opencore but after verbose I see a black screen on HDMI output. The GUI works only on Displayport.
The solution, for me (according OP), seems to be injecting Hamachi framebuffer (instead of Futumaki), but how to do it in opencore?
My setup (Legacy BIOS):
Gigabyte P55a-ud4
i7-860 (Lynnfield)
Sapphire R9 280x Toxic (2 x minDP, 1 x HDMI, 1 x DVI) with ID: 0x67981002
Radeon_bios_decode/decoder didn't work on my actual Sierra Hackintosh (maybe due to legacy BIOS) but I extracted some info with AMD Framebuffer Utility (see photo attached) and Hackintool:
GPU Display controller:
Code:
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/pci-bridge@3/IOPP/GFX0@0
PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)
GPU Multimedia controller (HDMI Audio):
Code:
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/pci-bridge@3/IOPP/HDAU@0,1
PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x1)
Please, could you help me to create the right Device Properties to paste inside opencore?
Thanks a lot